Osaekomi-waza

Grappling hold
Two wrestlers clinching.

A grappling hold (commonly referred to simply as a hold; in Japanese referred to as katame-waza, 固め技, "grappling technique") is a specific grappling, wrestling, judo or other martial arts grip that is applied to an opponent. Holds are principally used to control the opponent, and to advance in points or positioning. Holds may be categorized by their function such as clinching, pinning or submission, while others can be classified by their anatomical effect: chokehold, joint-lock or compression lock.

A clinch hold (also known as a clinching hold) is a grappling hold which is used in clinch fighting with the purpose of controlling the opponent. In wrestling it is referred to as the tie-up. The use of a clinch hold results in the clinch. Clinch holds can be used to close in on the opponent, as a precursor to a takedown or throw, or to prevent the opponent from moving away or striking effectively. Typical clinch holds include:

A pinning hold (also known as a hold down and in Japanese as osaekomi-waza, 抑え込み技, "pinning technique") is a general grappling hold used in ground fighting which is aimed to subdue by exerting superior control over an opponent and pinning the opponent to the ground. Pinning holds where both the opponent's shoulders touch the ground are considered winning conditions in several combat sports.

...
Wikipedia